主成分分析PCA降维

2009年9月份研究生数学建模的程序代码和图表，题目：关于城镇就业人数的数学模型，获得二等奖。(September 2009 Graduate mathematical modeling of program code and charts, the title: on the mathematical model of urban employment, won second prize.)

利用COM组建的实现VC++与MATLAB的混合编程(COM realize the use of established VC++ Mixed with MATLAB Programming)

《数字信号处理教程——MATLAB释义与实现》的程序集，其中包括三部分。在examples子目录下本书全部例题的完整MATLAB程序；在subrtdsp子目录下是本书中自编的一些子程序，在运行例题程序时需要调用；这两个程序包是在学完本书后，读者能够读懂理解的。(dsk04 is a " digital signal processing tutorial- MATLAB Interpretation and Implementation" of the assembly, which consists of three parts. In all the examples subdirectory book example of a complete MATLAB programs in subrtdsp subdirectory is some self-compiled subroutines in the book, when running the example program need to call these two packages is in the completion of the book, the reader able to read to understand.)

灰色 GM(1 ,1) 预测模型是灰色理论中的重要组成部分 ,也是主要的预测方法之一. 因此 , GM(1 ,1)模型的应用范围很广泛.,用 MATLAB 软件 实现了 GM(1 ,1)预测算法并给出了源代码.(Grey GM (1, 1) prediction model is an important part of grey theory, and it is also one of the main prediction methods. Therefore, GM (1, 1) model has wide application scope. GM (1, 1) prediction algorithm is implemented by MATLAB software, and the source code is given.)

说明：  不同信噪比下，能量检测虚警概率与检测成功率的关系(The relationship between energy detection false alarm probability and detection success rate under different SNR. .)

DGGE图谱的泳道的亮度（灰度）矩阵转化为0-1二维矩阵(DGGE profiles of the lanes of the brightness (gray) matrix into two-dimensional matrix 0-1)

说明：  通信信号的调制信息包含在信号的瞬时幅度、相位、频率的变化之中，不同的信号其频谱也呈现不同的特征，通过提取瞬时幅度、相位、频率以及频谱的参数统计特征，可以识别不同的通信信号。通常是利用对瞬时幅度、瞬时相位，瞬时频率和信号功率谱进行某种变换而得到可以明显区分各种信号的特征参数。(Communication signal modulation information is contained in the signal instantaneous amplitude, phase, frequency changes, the spectrum of different signals also show different characteristics, by extracting the instantaneous amplitude, phase, frequency and statistical characteristics of the parameters of the spectrum, you can identify different communication signals. Usually by the use of instantaneous amplitude, instantaneous phase, instantaneous frequency and signal power spectrum a transformation which can be clearly distinguished by the characteristic parameters of various signals.)

Modelling Financial Time Series with S-Plus

使用带通滤波器对图像进行处理，滤除不必要的杂波(Using band-pass filter to do image processing, filtering unnecessary clutter)

此程序为计算桁架受荷载作用下的位移及应力算例(This program is subject to displacement and stress calculation truss under load examples)